Why Does an Automotive Clay Bar Unlock a Mirror-Smooth Car Finish? Many car owners wash their vehicles regularly, yet the paint still feels rough and looks dull under sunlight. This happens because everyday driving exposes the surface to contaminants that soap cannot remove. Industrial fallout, brake dust, rail particles, tree sap residue, and airborne pollution slowly bond with the clear coat. These invisible particles reduce shine and interfere with wax performance. In the middle of a professional detailing routine, an automotive clay bar becomes the key step that solves this hidden problem. Read more:- https://www.apsense.com/article/872654-why-does-an-automotive-clay-bar-unlock-a-mirror-smooth-car.html